Merge pull request #4624 from eclipse/jetty-9.4.x-4123-OpenId_Docs
Issue #4123 - add documentation for OpenID to 9.4.x
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Lachlan
GitHub
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9ef7790e45
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@ -26,3 +26,4 @@ include::secure-passwords.adoc[]
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include::setting-port80-access-for-non-root-user.adoc[]
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include::jaas-support.adoc[]
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include::spnego-support.adoc[]
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include::openid-support.adoc[]
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@ -0,0 +1,139 @@
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//
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// ========================================================================
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// Copyright (c) 1995-2020 Mort Bay Consulting Pty Ltd and others.
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// ========================================================================
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// All rights reserved. This program and the accompanying materials
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// are made available under the terms of the Eclipse Public License v1.0
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// and Apache License v2.0 which accompanies this distribution.
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//
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// The Eclipse Public License is available at
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// http://www.eclipse.org/legal/epl-v10.html
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//
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// The Apache License v2.0 is available at
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// http://www.opensource.org/licenses/apache2.0.php
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//
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// You may elect to redistribute this code under either of these licenses.
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// ========================================================================
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//
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[[openid-support]]
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=== OpenID Support
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==== External Setup
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===== Registering an App with OpenID Provider
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You must register the app with an OpenID Provider such as Google or Amazon.
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This will give you a Client ID and Client Secret.
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Once set up you must also register all the possible URI's for your webapp with the path `/j_security_check` so that the OpenId Provider will allow redirection back to the webapp.
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These may look like
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* `http://localhost:8080/openid-webapp/j_security_check`
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* `https://example.com/j_security_check`
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==== Distribution Configuration
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===== OpenID Provider Configuration
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To enable OpenID support, you first need to activate the `openid` module in your implementation.
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[source, screen, subs="{sub-order}"]
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----
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java -jar {JETTY_HOME}/start.jar --add-to-start=openid
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----
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To configure OpenID Authentication with Jetty you will need to specify the OpenID Provider's issuer identifier (case sensitive URL using the `https` scheme) and the OAuth 2.0 Client ID and Client Secret.
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If the OpenID Provider does not allow metadata discovery you will also need to specify the token endpoint and authorization endpoint of the OpenID Provider.
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These can be set as properties in the `start.ini` or `start.d/openid.ini` files.
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===== WebApp Specific Configuration in web.xml
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The `web.xml` file needs some specific configuration to use OpenID.
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There must be a `login-config` element with an `auth-method` value of `OPENID`, and a `realm-name` value of the exact URL string used to set the OpenID Provider.
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To set the error page, an init param is set at `"org.eclipse.jetty.security.openid.error_page"`, its value should be a path relative to the webapp where authentication errors should be redirected.
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Example:
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[source, xml, subs="{sub-order}"]
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----
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<login-config>
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<auth-method>OPENID</auth-method>
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<realm-name>https://accounts.google.com</realm-name>
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</login-config>
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<context-param>
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<param-name>org.eclipse.jetty.security.openid.error_page</param-name>
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<param-value>/error</param-value>
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</context-param>
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----
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==== Embedded Configuration
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===== Define the `OpenIdConfiguration` for a specific OpenID Provider.
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If the OpenID Provider allows metadata discovery then you can use.
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[source, java, subs="{sub-order}"]
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----
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OpenIdConfiguration openIdConfig = new OpenIdConfiguration(ISSUER, CLIENT_ID, CLIENT_SECRET);
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----
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Otherwise you can manually enter the necessary information:
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[source, java, subs="{sub-order}"]
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----
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OpenIdConfiguration openIdConfig = new OpenIdConfiguration(ISSUER, TOKEN_ENDPOINT, AUTH_ENDPOINT, CLIENT_ID, CLIENT_SECRET);
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----
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===== Configuring an `OpenIdLoginService`
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[source, java, subs="{sub-order}"]
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----
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LoginService loginService = new OpenIdLoginService(openIdConfig);
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securityHandler.setLoginService(loginService);
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----
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===== Configuring an `OpenIdAuthenticator` with `OpenIdConfiguration` and Error Page Redirect
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[source, java, subs="{sub-order}"]
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----
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Authenticator authenticator = new OpenIdAuthenticator(openIdConfig, "/error");
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securityHandler.setAuthenticator(authenticator);
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servletContextHandler.setSecurityHandler(securityHandler);
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----
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===== Usage
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====== Claims and Access Token
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Claims about the user can be found using attributes on the session attribute `"org.eclipse.jetty.security.openid.claims"`, and the full response containing the OAuth 2.0 Access Token can be found with the session attribute `"org.eclipse.jetty.security.openid.response"`.
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Example:
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[source, java, subs="{sub-order}"]
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----
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Map<String, Object> claims = (Map)request.getSession().getAttribute("org.eclipse.jetty.security.openid.claims");
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String userId = claims.get("sub");
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Map<String, Object> response = (Map)request.getSession().getAttribute("org.eclipse.jetty.security.openid.response");
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String accessToken = response.get("access_token");
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----
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==== Scopes
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The OpenID scope is always used but additional scopes can be requested which can give you additional resources or privileges.
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For the Google OpenID Provider it can be useful to request the scopes `profile` and `email` which will give you additional user claims.
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Additional scopes can be requested through the `start.ini` or `start.d/openid.ini` files, or with `OpenIdConfiguration.addScopes(...);` in embedded code.
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==== Roles
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If security roles are required they can be configured through a wrapped `LoginService` which is deferred to for role information by the `OpenIdLoginService`.
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This can be configured in XML through `etc/openid-baseloginservice.xml` in the Distribution, or in embedded code using the constructor for the `OpenIdLoginService`.
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[source, java, subs="{sub-order}"]
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----
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LoginService wrappedLoginService = ...; // Optional LoginService for Roles
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LoginService loginService = new OpenIdLoginService(openIdConfig, wrappedLoginService);
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----
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When using authorization roles, the setting `authenticateNewUsers` becomes significant.
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If set to `true` users not found by the wrapped `LoginService` will still be authenticated but will have no roles.
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If set to `false` those users will be not be allowed to authenticate and are redirected to the error page.
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This setting is configured through the property `jetty.openid.authenticateNewUsers` in the `start.ini` or `start.d/openid.ini` file, or with `OpenIdLoginService.setAuthenticateNewUsers(...);` in embedded code.
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